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Finding the Third Proportional to 613.50 and 874

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Solution

The third proportional to 613.50 and 874 is: 1,245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.50 : 874 = 874 : x
  2. Step 2: Convert to fraction form
    613.50/874 = 874/x
  3. Step 3: Cross multiply
    613.50x = 874 × 874
  4. Step 4: Simplify right side
    613.50x = 763,876
  5. Step 5: Solve for x
    x = 763,876/613.50
  6. Step 6: Final answer
    x = 1,245.11

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.